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c906108c SS |
1 | /* This file is part of the program psim. |
2 | ||
3 | Copyright (C) 1994-1995,1997 Andrew Cagney <cagney@highland.com.au> | |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the Free Software | |
17 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
18 | ||
19 | */ | |
20 | ||
21 | ||
22 | #include <sys/types.h> | |
23 | #include <sys/stat.h> | |
24 | #include <stdio.h> | |
25 | #include <fcntl.h> | |
26 | #include <ctype.h> | |
27 | ||
28 | #include "config.h" | |
29 | #include "misc.h" | |
30 | #include "lf.h" | |
31 | #include "table.h" | |
32 | ||
33 | #ifdef HAVE_UNISTD_H | |
34 | #include <unistd.h> | |
35 | #endif | |
36 | ||
37 | #ifdef HAVE_STDLIB_H | |
38 | #include <stdlib.h> | |
39 | #endif | |
40 | ||
41 | typedef struct _open_table open_table; | |
42 | struct _open_table { | |
43 | size_t size; | |
44 | char *buffer; | |
45 | char *pos; | |
46 | line_ref pseudo_line; | |
47 | line_ref real_line; | |
48 | open_table *parent; | |
49 | table *root; | |
50 | }; | |
51 | struct _table { | |
52 | open_table *current; | |
53 | }; | |
54 | ||
55 | ||
56 | static line_ref * | |
57 | current_line (open_table *file) | |
58 | { | |
59 | line_ref *entry = ZALLOC (line_ref); | |
60 | *entry = file->pseudo_line; | |
61 | return entry; | |
62 | } | |
63 | ||
64 | static table_entry * | |
65 | new_table_entry (open_table *file, | |
66 | table_entry_type type) | |
67 | { | |
68 | table_entry *entry; | |
69 | entry = ZALLOC (table_entry); | |
70 | entry->file = file->root; | |
71 | entry->line = current_line (file); | |
72 | entry->type = type; | |
73 | return entry; | |
74 | } | |
75 | ||
76 | static void | |
77 | set_nr_table_entry_fields (table_entry *entry, | |
78 | int nr_fields) | |
79 | { | |
80 | entry->field = NZALLOC (char*, nr_fields + 1); | |
81 | entry->nr_fields = nr_fields; | |
82 | } | |
83 | ||
84 | ||
85 | void | |
86 | table_push (table *root, | |
87 | line_ref *line, | |
88 | table_include *includes, | |
89 | const char *file_name) | |
90 | { | |
91 | FILE *ff; | |
92 | open_table *file; | |
93 | table_include dummy; | |
94 | table_include *include = &dummy; | |
95 | ||
96 | /* dummy up a search of this directory */ | |
97 | dummy.next = includes; | |
98 | dummy.dir = ""; | |
99 | ||
100 | /* create a file descriptor */ | |
101 | file = ZALLOC (open_table); | |
102 | if (file == NULL) | |
103 | { | |
104 | perror (file_name); | |
105 | exit (1); | |
106 | } | |
107 | file->root = root; | |
108 | file->parent = root->current; | |
109 | root->current = file; | |
110 | ||
111 | while (1) | |
112 | { | |
113 | /* save the file name */ | |
114 | char *dup_name = NZALLOC (char, strlen (include->dir) + strlen (file_name) + 2); | |
115 | if (dup_name == NULL) | |
116 | { | |
117 | perror (file_name); | |
118 | exit (1); | |
119 | } | |
120 | if (include->dir[0] != '\0') | |
121 | { | |
122 | strcat (dup_name, include->dir); | |
123 | strcat (dup_name, "/"); | |
124 | } | |
125 | strcat (dup_name, file_name); | |
126 | file->real_line.file_name = dup_name; | |
127 | file->pseudo_line.file_name = dup_name; | |
128 | /* open the file */ | |
129 | ||
130 | ff = fopen (dup_name, "rb"); | |
131 | if (ff) | |
132 | break; | |
133 | /* zfree (dup_name); */ | |
134 | if (include->next == NULL) | |
135 | { | |
136 | if (line != NULL) | |
137 | error (line, "Problem opening file `%s'\n", file_name); | |
138 | perror (file_name); | |
139 | exit (1); | |
140 | } | |
141 | include = include->next; | |
142 | } | |
143 | ||
144 | ||
145 | /* determine the size */ | |
146 | fseek (ff, 0, SEEK_END); | |
147 | file->size = ftell (ff); | |
148 | fseek (ff, 0, SEEK_SET); | |
149 | ||
150 | /* allocate this much memory */ | |
151 | file->buffer = (char*) zalloc (file->size + 1); | |
152 | if (file->buffer == NULL) | |
153 | { | |
154 | perror (file_name); | |
155 | exit (1); | |
156 | } | |
157 | file->pos = file->buffer; | |
158 | ||
159 | /* read it all in */ | |
160 | if (fread (file->buffer, 1, file->size, ff) < file->size) { | |
161 | perror (file_name); | |
162 | exit (1); | |
163 | } | |
164 | file->buffer[file->size] = '\0'; | |
165 | ||
166 | /* set the initial line numbering */ | |
167 | file->real_line.line_nr = 1; /* specifies current line */ | |
168 | file->pseudo_line.line_nr = 1; /* specifies current line */ | |
169 | ||
170 | /* done */ | |
171 | fclose (ff); | |
172 | } | |
173 | ||
174 | table * | |
175 | table_open (const char *file_name) | |
176 | { | |
177 | table *root; | |
178 | ||
179 | /* create a file descriptor */ | |
180 | root = ZALLOC (table); | |
181 | if (root == NULL) | |
182 | { | |
183 | perror (file_name); | |
184 | exit (1); | |
185 | } | |
186 | ||
187 | table_push (root, NULL, NULL, file_name); | |
188 | return root; | |
189 | } | |
190 | ||
191 | char * | |
192 | skip_spaces (char *chp) | |
193 | { | |
194 | while (1) | |
195 | { | |
196 | if (*chp == '\0' | |
197 | || *chp == '\n' | |
198 | || !isspace (*chp)) | |
199 | return chp; | |
200 | chp++; | |
201 | } | |
202 | } | |
203 | ||
204 | ||
205 | char * | |
206 | back_spaces (char *start, char *chp) | |
207 | { | |
208 | while (1) | |
209 | { | |
210 | if (chp <= start | |
211 | || !isspace (chp[-1])) | |
212 | return chp; | |
213 | chp--; | |
214 | } | |
215 | } | |
216 | ||
217 | char * | |
218 | skip_digits (char *chp) | |
219 | { | |
220 | while (1) | |
221 | { | |
222 | if (*chp == '\0' | |
223 | || *chp == '\n' | |
224 | || !isdigit (*chp)) | |
225 | return chp; | |
226 | chp++; | |
227 | } | |
228 | } | |
229 | ||
230 | char * | |
231 | skip_to_separator (char *chp, | |
232 | char *separators) | |
233 | { | |
234 | while (1) | |
235 | { | |
236 | char *sep = separators; | |
237 | while (1) | |
238 | { | |
239 | if (*chp == *sep) | |
240 | return chp; | |
241 | if (*sep == '\0') | |
242 | break; | |
243 | sep++; | |
244 | } | |
245 | chp++; | |
246 | } | |
247 | } | |
248 | ||
249 | static char * | |
250 | skip_to_null (char *chp) | |
251 | { | |
252 | return skip_to_separator (chp, ""); | |
253 | } | |
254 | ||
255 | ||
256 | static char * | |
257 | skip_to_nl (char * chp) | |
258 | { | |
259 | return skip_to_separator (chp, "\n"); | |
260 | } | |
261 | ||
262 | ||
263 | static void | |
264 | next_line (open_table *file) | |
265 | { | |
266 | file->pos = skip_to_nl (file->pos); | |
267 | if (*file->pos == '0') | |
268 | error (&file->pseudo_line, "Missing <nl> at end of line\n"); | |
269 | *file->pos = '\0'; | |
270 | file->pos += 1; | |
271 | file->real_line.line_nr += 1; | |
272 | file->pseudo_line.line_nr += 1; | |
273 | } | |
274 | ||
275 | ||
276 | extern table_entry * | |
277 | table_read (table *root) | |
278 | { | |
279 | open_table *file = root->current; | |
280 | table_entry *entry = NULL; | |
281 | while(1) | |
282 | { | |
283 | ||
284 | /* end-of-file? */ | |
285 | while (*file->pos == '\0') | |
286 | { | |
287 | if (file->parent != NULL) | |
288 | { | |
289 | file = file->parent; | |
290 | root->current = file; | |
291 | } | |
292 | else | |
293 | return NULL; | |
294 | } | |
295 | ||
296 | /* code_block? */ | |
297 | if (*file->pos == '{') | |
298 | { | |
299 | char *chp; | |
300 | next_line (file); /* discard leading brace */ | |
301 | entry = new_table_entry (file, table_code_entry); | |
302 | chp = file->pos; | |
303 | /* determine how many lines are involved - look for <nl> "}" */ | |
304 | { | |
305 | int nr_lines = 0; | |
306 | while (*file->pos != '}') | |
307 | { | |
308 | next_line (file); | |
309 | nr_lines++; | |
310 | } | |
311 | set_nr_table_entry_fields (entry, nr_lines); | |
312 | } | |
313 | /* now enter each line */ | |
314 | { | |
315 | int line_nr; | |
316 | for (line_nr = 0; line_nr < entry->nr_fields; line_nr++) | |
317 | { | |
318 | if (strncmp (chp, " ", 2) == 0) | |
319 | entry->field[line_nr] = chp + 2; | |
320 | else | |
321 | entry->field[line_nr] = chp; | |
322 | chp = skip_to_null (chp) + 1; | |
323 | } | |
324 | /* skip trailing brace */ | |
325 | ASSERT (*file->pos == '}'); | |
326 | next_line (file); | |
327 | } | |
328 | break; | |
329 | } | |
330 | ||
331 | /* tab block? */ | |
332 | if (*file->pos == '\t') | |
333 | { | |
334 | char *chp = file->pos; | |
335 | entry = new_table_entry (file, table_code_entry); | |
336 | /* determine how many lines are involved - look for <nl> !<tab> */ | |
337 | { | |
338 | int nr_lines = 0; | |
339 | int nr_blank_lines = 0; | |
340 | while (1) | |
341 | { | |
342 | if (*file->pos == '\t') | |
343 | { | |
344 | nr_lines = nr_lines + nr_blank_lines + 1; | |
345 | nr_blank_lines = 0; | |
346 | next_line (file); | |
347 | } | |
348 | else | |
349 | { | |
350 | file->pos = skip_spaces (file->pos); | |
351 | if (*file->pos != '\n') | |
352 | break; | |
353 | nr_blank_lines++; | |
354 | next_line (file); | |
355 | } | |
356 | } | |
357 | set_nr_table_entry_fields (entry, nr_lines); | |
358 | } | |
359 | /* now enter each line */ | |
360 | { | |
361 | int line_nr; | |
362 | for (line_nr = 0; line_nr < entry->nr_fields; line_nr++) | |
363 | { | |
364 | if (*chp == '\t') | |
365 | entry->field[line_nr] = chp + 1; | |
366 | else | |
367 | entry->field[line_nr] = ""; /* blank */ | |
368 | chp = skip_to_null (chp) + 1; | |
369 | } | |
370 | } | |
371 | break; | |
372 | } | |
373 | ||
374 | /* cpp directive? */ | |
375 | if (file->pos[0] == '#') | |
376 | { | |
377 | char *chp = skip_spaces (file->pos + 1); | |
378 | ||
379 | /* cpp line-nr directive - # <line-nr> "<file>" */ | |
380 | if (isdigit (*chp) | |
381 | && *skip_digits (chp) == ' ' | |
382 | && *skip_spaces (skip_digits (chp)) == '"') | |
383 | { | |
384 | int line_nr; | |
385 | char *file_name; | |
386 | file->pos = chp; | |
387 | /* parse the number */ | |
388 | line_nr = atoi(file->pos) - 1; | |
389 | /* skip to the file name */ | |
390 | while (file->pos[0] != '0' | |
391 | && file->pos[0] != '"' | |
392 | && file->pos[0] != '\0') | |
393 | file->pos++; | |
394 | if (file->pos[0] != '"') | |
395 | error (&file->real_line, "Missing opening quote in cpp directive\n"); | |
396 | /* parse the file name */ | |
397 | file->pos++; | |
398 | file_name = file->pos; | |
399 | while (file->pos[0] != '"' | |
400 | && file->pos[0] != '\0') | |
401 | file->pos++; | |
402 | if (file->pos[0] != '"') | |
403 | error (&file->real_line, "Missing closing quote in cpp directive\n"); | |
404 | file->pos[0] = '\0'; | |
405 | file->pos++; | |
406 | file->pos = skip_to_nl (file->pos); | |
407 | if (file->pos[0] != '\n') | |
408 | error (&file->real_line, "Missing newline in cpp directive\n"); | |
409 | file->pseudo_line.file_name = file_name; | |
410 | file->pseudo_line.line_nr = line_nr; | |
411 | next_line (file); | |
412 | continue; | |
413 | } | |
414 | ||
415 | /* #define and #undef - not implemented yet */ | |
416 | ||
417 | /* Old style # comment */ | |
418 | next_line (file); | |
419 | continue; | |
420 | } | |
421 | ||
422 | /* blank line or end-of-file? */ | |
423 | file->pos = skip_spaces (file->pos); | |
424 | if (*file->pos == '\0') | |
425 | error (&file->pseudo_line, "Missing <nl> at end of file\n"); | |
426 | if (*file->pos == '\n') | |
427 | { | |
428 | next_line (file); | |
429 | continue; | |
430 | } | |
431 | ||
432 | /* comment - leading // or # - skip */ | |
433 | if ((file->pos[0] == '/' && file->pos[1] == '/') | |
434 | || (file->pos[0] == '#')) | |
435 | { | |
436 | next_line (file); | |
437 | continue; | |
438 | } | |
439 | ||
440 | /* colon field */ | |
441 | { | |
442 | char *chp = file->pos; | |
443 | entry = new_table_entry (file, table_colon_entry); | |
444 | next_line (file); | |
445 | /* figure out how many fields */ | |
446 | { | |
447 | int nr_fields = 1; | |
448 | char *tmpch = chp; | |
449 | while (1) | |
450 | { | |
451 | tmpch = skip_to_separator (tmpch, "\\:"); | |
452 | if (*tmpch == '\\') | |
453 | { | |
454 | /* eat the escaped character */ | |
455 | char *cp = tmpch; | |
456 | while (cp[1] != '\0') | |
457 | { | |
458 | cp[0] = cp[1]; | |
459 | cp++; | |
460 | } | |
461 | cp[0] = '\0'; | |
462 | tmpch++; | |
463 | } | |
464 | else if (*tmpch != ':') | |
465 | break; | |
466 | else | |
467 | { | |
468 | *tmpch = '\0'; | |
469 | tmpch++; | |
470 | nr_fields++; | |
471 | } | |
472 | } | |
473 | set_nr_table_entry_fields (entry, nr_fields); | |
474 | } | |
475 | /* now parse them */ | |
476 | { | |
477 | int field_nr; | |
478 | for (field_nr = 0; field_nr < entry->nr_fields; field_nr++) | |
479 | { | |
480 | chp = skip_spaces (chp); | |
481 | entry->field[field_nr] = chp; | |
482 | chp = skip_to_null (chp); | |
483 | *back_spaces (entry->field[field_nr], chp) = '\0'; | |
484 | chp++; | |
485 | } | |
486 | } | |
487 | break; | |
488 | } | |
489 | ||
490 | } | |
491 | ||
492 | ASSERT (entry == NULL || entry->field[entry->nr_fields] == NULL); | |
493 | return entry; | |
494 | } | |
495 | ||
496 | extern void | |
497 | table_print_code (lf *file, | |
498 | table_entry *entry) | |
499 | { | |
500 | int field_nr; | |
501 | int nr = 0; | |
502 | for (field_nr = 0; | |
503 | field_nr < entry->nr_fields; | |
504 | field_nr++) | |
505 | { | |
506 | char *chp = entry->field[field_nr]; | |
507 | int in_bit_field = 0; | |
508 | if (*chp == '#') | |
509 | lf_indent_suppress(file); | |
510 | while (*chp != '\0') | |
511 | { | |
512 | if (chp[0] == '{' | |
513 | && !isspace(chp[1]) | |
514 | && chp[1] != '\0') | |
515 | { | |
516 | in_bit_field = 1; | |
517 | nr += lf_putchr(file, '_'); | |
518 | } | |
519 | else if (in_bit_field && chp[0] == ':') | |
520 | { | |
521 | nr += lf_putchr(file, '_'); | |
522 | } | |
523 | else if (in_bit_field && *chp == '}') | |
524 | { | |
525 | nr += lf_putchr(file, '_'); | |
526 | in_bit_field = 0; | |
527 | } | |
528 | else | |
529 | { | |
530 | nr += lf_putchr(file, *chp); | |
531 | } | |
532 | chp++; | |
533 | } | |
534 | if (in_bit_field) | |
535 | { | |
536 | line_ref line = *entry->line; | |
537 | line.line_nr += field_nr; | |
538 | error (&line, "Bit field brace miss match\n"); | |
539 | } | |
540 | nr += lf_putchr(file, '\n'); | |
541 | } | |
542 | } | |
543 | ||
544 | ||
545 | ||
546 | void | |
547 | dump_line_ref (lf *file, | |
548 | char *prefix, | |
549 | const line_ref *line, | |
550 | char *suffix) | |
551 | { | |
552 | lf_printf (file, "%s(line_ref*) 0x%lx", prefix, (long) line); | |
553 | if (line != NULL) | |
554 | { | |
555 | lf_indent (file, +1); | |
556 | lf_printf (file, "\n(line_nr %d)", line->line_nr); | |
557 | lf_printf (file, "\n(file_name %s)", line->file_name); | |
558 | lf_indent (file, -1); | |
559 | } | |
560 | lf_printf (file, "%s", suffix); | |
561 | } | |
562 | ||
563 | ||
564 | static const char * | |
565 | table_entry_type_to_str (table_entry_type type) | |
566 | { | |
567 | switch (type) | |
568 | { | |
569 | case table_code_entry: return "code-entry"; | |
570 | case table_colon_entry: return "colon-entry"; | |
571 | } | |
572 | return "*invalid*"; | |
573 | } | |
574 | ||
575 | void | |
576 | dump_table_entry(lf *file, | |
577 | char *prefix, | |
578 | const table_entry *entry, | |
579 | char *suffix) | |
580 | { | |
581 | lf_printf (file, "%s(table_entry*) 0x%lx", prefix, (long) entry); | |
582 | if (entry != NULL) | |
583 | { | |
584 | int field; | |
585 | lf_indent (file, +1); | |
586 | dump_line_ref (file, "\n(line ", entry->line, ")"); | |
587 | lf_printf (file, "\n(type %s)", table_entry_type_to_str (entry->type)); | |
588 | lf_printf (file, "\n(nr_fields %d)", entry->nr_fields); | |
589 | lf_printf (file, "\n(fields"); | |
590 | lf_indent (file, +1); | |
591 | for (field = 0; field < entry->nr_fields; field++) | |
592 | lf_printf (file, "\n\"%s\"", entry->field[field]); | |
593 | lf_indent (file, -1); | |
594 | lf_printf (file, ")"); | |
595 | lf_indent (file, -1); | |
596 | } | |
597 | lf_printf (file, "%s", suffix); | |
598 | } | |
599 | ||
600 | ||
601 | #ifdef MAIN | |
602 | int | |
603 | main(int argc, char **argv) | |
604 | { | |
605 | table *t; | |
606 | table_entry *entry; | |
607 | lf *l; | |
608 | int line_nr; | |
609 | ||
610 | if (argc != 2) | |
611 | { | |
612 | printf("Usage: table <file>\n"); | |
613 | exit (1); | |
614 | } | |
615 | ||
616 | t = table_open (argv[1]); | |
617 | l = lf_open ("-", "stdout", lf_omit_references, lf_is_text, "tmp-table"); | |
618 | ||
619 | line_nr = 0; | |
620 | do | |
621 | { | |
622 | char line[10]; | |
623 | entry = table_read (t); | |
624 | line_nr ++; | |
625 | sprintf (line, "(%d ", line_nr); | |
626 | dump_table_entry (l, line, entry, ")\n"); | |
627 | } | |
628 | while (entry != NULL); | |
629 | ||
630 | return 0; | |
631 | } | |
632 | #endif |